The figure depicts Jack-in-the-box: "Jack" is attached inside a box by a spring, as shown. You estimate Jack's mass to be 0.4 kg. As so often happens, a sign tells you the spring constant: k = 166 N/m. The Jack-in-the-box is immersed in a fluid. The fluid offers a resistive force f = -bv, which damps the oscillation. Under the influence of this damping, you observe the period of the oscillation to be 0.5 s. HOLLOWAY